Waves Vocab

In a simple pendulum, which force brings the mass back to equilibrium?

• Gravitational force

• Elastic force

• Tension

• Friction

Which graph can be used to describe oscillation?

• displacement-time graph

• displacement-length graph

• amplitude-time graph

• time invariant graph

The picture is taken from an oscilloscope. The vertical scale is at 500 mV per division. What is the amplitude of the green signal?

• 0.50 V

• 1.50 V

• 3.00 V

• 5.00 V

The horizontal scale is 10 ns per division. What is the oscillation frequency of the green signal?

• 5.0 kHz

• 10 kHz

• 5.0 MHz

• 10 MHz

Which of the following best defines an oscillation?

• Random movement

• Back and forth movement about a fixed point

• No movement

Which of the following motions are examples of oscillations? (Select all)

• Vibration of a violin string

• Heartbeat

• Flapping of wings of a dragonfly

• Bus journey from UG to DJ

What is the word for the time required for one complete cycle of vibration to pass a given point.

• Period

• Frequency

• Amplitude

• Crest

The number of occurrences of a repeating event per unit of time is . . .

• frequency.

• amplitude.

• period.

• seconds.

Frequency is measured is what SI unit?

• hertz

• seconds

• meters

• meters per second

As the frequency increases the period . . .

• decreases.

• increases.

• stays the same.

• it depends